Wrapping machine



June 6, 1933. J. VAN BUREN r WRAPPING MACHINE v File d Nov. 18, 1931 5 Sheets-Sheet 1 INVENTOR Jblm Van Bare/7 June 6, 1933.

J. VAN BUREN WRAPPING MACHINE Filed Nov. 18, 1931 5 Sheets-$heet 2 INVENTOR Jo m Km Buren BY m I TTORNEYS June 6, 1933. VAN BUREN 1,912,806

WRAPPING MACHINE Filed Nov. 18, 1931 3 Sheets-Shet 5 INVENTOR' TTORNEYS fed into the f A Patented June 6, 1933- PATENT OFFICE JOHN VAN RUBEN, OI BBDOKLYN, NEW YORK wnarrme mm Application filed November 18, 1931. Serial No. 575,751.

This iri'v'er'ition relates to wrapping machines and the machine about to be described as an embodiment of the invention has been designedparticularly for wrapping :3 cakes of soap, .although, of course, the invention is not limited to this specific use.

This invention has been worked out in connection with the type of wrapping machine shown in Van Buren Patent 1,746,448 granted February 11, 1930. In the machine disclosed therein, the wrapper is folded around the article and the ends are then folded across the ends of the article in opposite directions. Some difficulty has been encountered in maintaining the wrap per tight around the article. since it tends to loosen the folds extending in one direc-,

tion as the article is discharged from the folding mechanism into the guideway or delivery chute.

This invention has for its salient object to provide means for pulling the wrapper tight around the article and in maintaining the wrapper tight as the wrapped article is guideway or delivery chute. Further obJects .of the invention will appear from the following specification taken in connection with the drawings, which form a part of this application, and in I which V Fig. 1 is a side elevational view, partly in section, showing a machine constructed in accordance with the invention;

Fig. 2 is a vertical sectional elevation through the folding mechanism;

Fig. 3 is a horizontal sectional elevation at the bottom of the folding mechanism;

Fig. 4 is a sectional elevation atright angles to Fig.2, showing the lower end of the folding mechanism and the plunger for discharging the wrapped articles into the guideway or delivery chute.

Fig. 5 is asectionaI elevation taken at right angles to Fig. 4.

The invention briefly described consists of a machine comprising folding means for folding the wrapper around the article and means for folding the ends of the wrapper in opposite directions across the ends of the article. The end folding means comprises and the end folds formed by the folding means prior to the last folds extend in a direction opposite to the direction of the feeding movement of the articles. For this reason means in the form of positively driven rollers are provided for tightening the wrapper and holding the end folds as the article is fed into the chute.

Further details of the invention will appear from the following description.

In the particular embodiment of themvention illustrated in the drawings, there is shown a portion of the machine disclosed in the drawings of Patent 1,746,448 above referred to. The entire machine is not il- 7 lustrated as this is not deemed necessary.

The Wrappers are fed downwardly in the guideway 10 and pass between suitably driven feed rollers 11 and 12 into the path "of movement of the articles to be wrapped such as cakes of soap 13.

The articles move down an inclined support 14 and successively drop on a shelf 15. Areciprocating plunger 16 feeds the cakes from the shelf 15 into the open end of 30 a pocket or tumbler block 20.

As the cakes are fed into a pocket or tumbler block by the plunger 16 the wrapper is folded'around the three sides of the cake and fingers 22 and 23 carried by the 35 tumbler block or pocket tuck the ends of the wrappers as shown at 24 and 25.

The free, edge of the wrapper is folded against the other edge as the cake and the wrapper are discharged from the tumbler block into the vertically disposed folding mechanism 30.

The other end of the pocket or tumbler block 20 is formed by a plate which is,.carried by rods 32.

These rods are engaged at their upper ends by a pushed plate 33 carried by a lever 34 which is mounted on a fixed pivot 35 and is actuated by a crank pin 36 carried by a crank 37 and disposed in a slot 38 from receiving to discharging position.

This oscillation ma be accomplishedin a suitable manner an in Fig. 1, the shaft 40 of the ocket 20 has mounted thereon a gear 41 WlllCh' engages the rack 42 carried by a pitman 43 having a roller 44 engaged by a cam 46 carried by the shaft 47 on which the crank pin 36 is mounted. The cam is so designed as to reciprocate the pitman 43 and oscillate the tumbler block or pocket at the required periods in the cycle of operation of the machine.

The cakes-or articles are discharged from the tumbler block or pocket 20 downwardly 1 into the folding mechanism 30 which is provided with upwardly extending fingers 50 and 51 which engage the wrapper and tuck the ends thereof as shown in 52 and 53.

The folding mechanism is also provided along each edge thereof with curved slots 54 which engage the end folds at oneface of the cakes and fold. them across the ends of the cake.

In the machine disclosed in the patent above referred to the cakes are discharged from the bottom of the folding mechanism 30 and are forced into the guideway, the sides of the guideway engaging the ends at the other face of the cake and folding them against the end folds'already formed.

In the machine disclosed in this applica-.

tion further means has been provided for tightening the wrapper around the cakevbefore the wrapped cake is fed into the guideway. It was found that the end folds formed by the arcuate slots 54 tended to unwrap asthe cake and wrapper are fed into the guideway since the folds A extend in the direction opposite to the direction of the feeding movement of the cakes.

In order to tighten the wrapper around the cake, rollers 55 and 56 are rotatably mounted at the sides of the folding mechanism 30, below the slots 54.

The rollers 55 and 56 are mounted on spindles 57 and 58 to which are secured gears 59 and 60 which mesh with gears 61 and 62 carried by a shaft 63 which may be driven in a suitable manner as by a sprocket wheel 64. The rollers 55 and 56 are continuously rotated.

flhe direction of rotation of the rollers 55 and 56 is indicated by the .arrows in Fig. 3 and it will be noted that these rollers fric tionally engage the end folds A and by their'engagement pull the wrapper tightly around the ends of the cake.

As the lever is ac-' The rollers are driven at a faster rate of speed than the 4 As the cakes are discharged from the folding mechanism they will be positioned on a by plunger 71 whi is connected by pltman 72 to a crank 73 carriedby a shaft 74. As the shaft rotates the plun er 71 will be reciprocated and will push t e wrapped cakes along the shelf or table 70 between walls 75 and 76. These walls en age the outer ends B of the wrapper and fold them across the end folds A. From the chute or guideway formed by the table 70 and the side walls 75 and 76 the cakes may be conducted to any suitable handling means such as conveyors.

' Operation The operation of the machine above described may be summarized as follows:

The articles or cakes 13 are fed down the incline 14 and into the tumbler block 20, when the block is disposed in horizontal position. The block or pocket is then oscillated to vertical position as shown in Figs. .1 and 2 and the plate 31 pushes the cake from the pocket into the folding mechanism. The tucks 24 and 25 are formed when the wrapper and cake are pushed into the pocket and the tucks 52 and 53 are formed when the cakes are pushed into the folding mechanism. The end folds A are formed by the curved slots54 and as the'cake is discharged from the bottom of the folding mechanism it is positioned between the rollers 55 and 56 which engage the end folds A, A and pull the wrapper tight around the cake. The wrapper is thus tightened around the cake and the end folds B, B are formed when the wrapped cake is pushed into the guideway along the table 70. 1

Although one specific embodiment of the invention has been particularl shown and described, it will be understoo that the invention is capable of modification and" that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, as expressed in the following claims.

What I claim is: 1

1. In a wrapping machine, means for fold.- ing a wrapper around an article, a guide way, means for feeding the wrapped article into the guide way and positively moving means for tightening the wrapper as the wrapped article is fed into the guide way. 2. In a wrapping machine, means for foldmg a wrapper around an article a guide Way, means for feeding the wrapped article 4 shelf or table 70 between the rollers 55 and 56. When in this ppsition they are engaged into the guide way and means at the en- 6 way.

trance to the (guideway operating in the direction of fee of the article and at a faster rate of speed for tightening the wrapper as the wrapped article is fed into the guide 3. In a wrapping machine, means for fold-v ing a wrapper around an article, a guide way, means for feeding the wrapped article into the guide wa and positively driven 10 means disposed at t e. entrance to the guidewag for tightening the wrapper as the wrappe article enters the guide way.

4. In a wrapping machine, means for folding a wrapper around an article, a guide way, means for feeding the wrapped article into the guideway and positively driven moving means operating in the direction of feed of the article and at a faster rate of speed for tightening the wrapper as the wrap article is fed into the guide way.

5. n a wrapping machine, means for folding a wra per around the sides and'ends of an artic e, a guide way, means for feeding the wrapped article into .the guide way, and means, located at the entrance to the guideway and operating on certain of the end folds for tig wrap ed article is fed into the guide wzpy.

6. n a wrapping machine, means for olding a wrapper around the sides and ends of an article, a guide way,-m'eans for feedin the wrapped articleinto the guide way an moving means operatin on. certain of the end folds and in the irection of feeding movement of the article for tightening the wrapper is the wrapped artic e enters the gm e way.

7. In a wrapping machine, means for folding a wrapper around an article, a guide 40 way, means for feeding the wrapped article 7 into the guide way and rotating means for tightenin the wrapper as the wrapped article is fe into the guide way.

- 8;- In a wrapping machine, means for foldway, means for feeding the wrapped article into the guide way and rotatin 'means engaging end folds at the ends, 0 the article or tightening the wrapper as thewrapped article is fed into the guide way.

9. In a wrap ing machine, wrappm mechanism, for. oldln a wrapper aroun an article, and for fol ing the wrapper in one direction across the end of the article,

a guide way, means for pushing the article and wrapper from the into the guide way and, said end fold being made in a direction opposite to the direction of movement into the guide way and 00 means for tightening said end fold and wra g per as the wrapped article enters the gui 0 way.

10. In a .wrap ing machine, wrapping mechanism, for f0 ding a' wrapper around an articleyand for folding the wrapper in one ing a wrapper around an article, a guide olding mechanism direction across the end of the article, a guide way, and wrapper from the. folding mechanism into the guide way and, said end fold being made in a direction opposite to the direction of movement into the guide way and means operating in the direction of movement of the article into the guide way for tightening said end fold and wrapper as the wrapped article enters the uide way.

' JOHN V BUREN'.

tening the wrapper as the 7 means for pushing the article 

